I try to extract keratin from human hair and make 3D scaffolds for cell culture. I use what is called as Shindai method for extraction (b-mercatpoethanol, urea, thio-urea buffered in Tris-Cl). After extraction, I dialyze the extract against water for 4 days.
I am not able to grow cells on the scaffolds and I figured out there was b-mercaptanol remaining in the extract. Could tell me how can I remove b-ME completely.